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H. TIN. 



TIN is a filver-cploured gliftering metal, fovea 

 times heavier than water; does not vitrify like 

 lead; is malleable and unfonorous; foluble in 

 aqua regia, vitriolic, muriatic, nitric and acetous 

 acids ; yields a white oxyde that impairs the tran- 

 fparency of glafs, and converts it into- enamel. 

 Found in Cornwall and Bohemia. 



a. Native Tin : pure native tin is fo very rare, 

 that it's real exiftence has been doubted. 



(a.) 2. Native Oxyde, Spathofe tin ore; tin 

 combined with oxygen and iron ; is found in vari- 

 oUs modifications. 



b. Brown Tinstone and Spar; confifts of calx 

 of tin, calx of iron, and acid of tungften. 



c. Wood Tin, Stream Tin, or Cornifii Tin Ore ; 

 found only in Cornwall, in fmall globular or 

 reniform pieces, fometimes of a fibrous or radi- 

 ated texture ; containing tin, with oxygen and 

 iron. 



d Tin Pyrites, Sulphurifed Tin, or Sulphuret of 

 Tin; contains tin,fulphur, copper and iron, befides 

 it's matrix; it is diftinguifhed by it's fulphureous 

 fmell when heated. 



II. Fra~ 



